﻿using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/// <summary>
/// FileHelper 的摘要说明
/// </summary>
public class FileHelper
{
    public static string Encrypt(string filename)
    {
        byte[] buffer = HttpContext.Current.Request.ContentEncoding.GetBytes(filename);
        return HttpUtility.UrlEncode(Convert.ToBase64String(buffer));
    }

    public static string Decrypt(string encryptfilename)
    {
        byte[] buffer = Convert.FromBase64String(encryptfilename);
        return HttpContext.Current.Request.ContentEncoding.GetString(buffer);
    }
}
